Design of an Ultraprecise 127-MW/3- Solid-State Modulator With Split-Core Transformer

Optimal Design of a Transformer-based Solid-State Pulse Modulator with a Damping Network for Ultra-Fast Rise Times

“…This minimizes the leakage inductance, which is a limiting factor for the rise time. The 5SNA1250B450300 IGBT is considered as pulse switch which has been successfully used in [1] with a switching capability of 12 MW (3 kV / 4 kA). The switching characteristics of the IGBT are directly taken from the datasheet.…”

“…The field shape ring is designed with a radius d f , so that E max < E th . In [1,17], the field shape ring had a 7 mm radius. Here, a more conservative value of 9 mm is selected, as optimization runs of the transformer design showed a tendency between the range of 8-9 mm for not exceeding E max .…”

“…Here, a more conservative value of 9 mm is selected, as optimization runs of the transformer design showed a tendency between the range of 8-9 mm for not exceeding E max . Moreover, in this analysis, silicon iron (SiFe) 3% with a tape thickness of 50 µm is assumed as core material due to its high saturation flux density and high interlaminate breakdown voltage [1,13]. A 1.5 T applied flux density is assumed for the SiFe core.…”

“…A possible modulator concept, which meets these requirements, are solid-state pulse modulators based on pulse transformers. These have been proven to be able to produce high voltage pulses at high power levels [1][2][3][4][5] and achieve a high efficiency [6].…”

Efficiency Potential of Solid-State Pulse Modulators using SiC Devices

“…The efficiency of these systems becomes more and more important as an increasing number of accelerator facilities try to reduce the greenhouse gas emissions [1][2][3]. Pulse modulators, which are based on solidstate switches, have been proven to be able to efficiently generate pulses at high power levels [4], [5]. Typically, IGBT modules are used as solid-state switches as they offer high blocking voltages and current ratings, and these have demonstrated a reliable operation in pulsed power applications [6].…”